Apple patches flaw in QuickTime software

Apple Computer Inc. has patched a flaw in Quicktime that could be exploited by an attacker to run arbitrary code on a machine. The bug was discovered by a group of researchers who were investigating the Macintosh operating system and some third party software titles for it as part of the "Month of Apple Bugs" program. A total of 31 discovered vulnerabilities will be announced as a result.

This specific bug in QuickTime could be exploited using a specially crafted web page to cause a buffer overflow vulnerability in order to execute the arbitrary code. So far this is only issue patched by Apple itself. The fix prevents the Quicktime software from launching a malicious RTSP URL by performing additional validation.

No, you've got it all wrong.
It's not a patch for Mac users only, it's that the patch is only found at Apple and nowhere else yet.
PC users can apply the patch just as any Mac user can, they just have to go tp APPLE to get it.